Just highlight it and press on the 'Open' button at the bottom left - we will choose the VTS_01_0.VOB file in the example above. Now you need to locate the VOB file you wish to extract. You will now see a file browser and you must locate the DVD and open the VIDEO_TS folder : To import these VOB files into Avidemux Select 'File' from the Avidemux top menu and choose 'Open' : However sometimes there might be several films that are divided up by 'chapters'. This is likely to be a large film, as there is a maximum filesize on DVD's of just over 1GB. The other thing we are likely to see when opening a DVD VIDEO_TS file is several large video files of the same size followed by a smaller one. To test if it is the one you want you might try to open the file in a player like VLC player. The first VOB file we see in this example that is likely to contain a Video is VTS_01_1.VOB. Some of the VOB files also contain menu information. To make it a little more confusing, VOB files can actually contain more than one video file - this would be the case for a DVD that lets you switch perspective (camera angle) for example.
VOB means Video OBjects, so it might sound like these files are just video files but they also contain audio and subtitle information. It is the large VOB files that we are interested in. For example, you might see something like this : If you insert one into a computer and use a file browser to look at what is on the disk you will see a VIDEO_TS directory and some files of various names inside of it. To see more clearly what this means have a look at the structure of a DVD.
To extract the MPEG-2 file we need to import one or several VOB files that make up the content of the DVD. If you want to save a video file of a different kind (mp4 or xvid avi) then you should follow the first part of this chapter and then follow the instructions in other chapters. If the DVD is encrypted this will not work and you will need to decrypt the DVD first (we will not look at how to decrypt DVDs here). You'll need to extract an MPEG-2 file from the DVD in order to use it in a DVD authoring program. This is something you might want to do if you are creating a compilation DVD or adding language support to a DVD.
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